Collapsible bolster-roll.



H. & F. RUMPF. GOLLAPSIBLE BOLSTBR ROLL. APPLIGATION FILED NOV 16, 1010.

1,071,799. Patented Sept. 2, 1913.

2 SHEETS-*SHEBT 1.

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H. & F. RUMPP.

GOLLAPSIBLE BOLSTER ROLL.

APPLICATION FILED NOV. 10, 1910.

1,071,799. Patented Sept. 2, 1913.

2 SHEETS-SHEET 2.

' HERMAN BUMP F, 015 BELLE FUE, AND FREDRICK RUMPF, 01E NEWPORT,KENTUCKY;

SAID FBEDRICISI RTIMJPF ASSIGNOR TO SAID HERMAN RUMPF.

* l COLLAPSIBLE B OLSTER-ROLL emme.

Specification of Letters Patent.

IartentedSept. 2, 1 91?).

Application filed November 16, 1910. ,Serial No. 592.695.

T at! whom it may concern Be it known that we, Harman Humor and FanmuonRnirrr,oitizensof tl1eIb1itcd States, and residents, respectively, ofBelle- ,vueand of Newport, in the c 'uuity of (lampbell and State ofKentucky, have jointly invented certain newand useful improve- ,ments in,(olla-psible Bolsterdtolls, of which the following is a specification.

it is the object of our invention to pro- .vide a, collapsible bolsterroll which is capable of being arranged in flat relation for purposes ofshipment or storage and the like, and which is readily assembled intothe tornrof a roll, and the invention consists in the novel constructionof the parts, and in the novel. arrangements and combinations of theparts hereinaliter more fully described and Iclaimed.

In the drawings: "l igure 1 is a perspective view of our improved devicein set-up relation. il fig. 2 ,isa longitudinalsection of the same on a,line corresponding to the line 2-2 of Fig. 4. big. 3 is a longitudinalsection of the saineon .a line corresponding to the "line 33 of ,Fig.4:. Fig. 41 is a crosssection of the SILIUGOII a line correspoiuling tothe line lf-4t of Fig. 2. F 5 isa perspective view of one end of ourimproved device in partly closed relation. Fig. (3 is a perspective viewof our in'iproved device in collapsed relation. Fig. 7 is a per-spectivc View of the pivot-pin for securing the anchor-strips in place.

The bolster-roll comprises the longitudinal strips 11, '12, betweenwhich a preterabl y resilient sheet 13 is secured. This resilient sheetis preferably of card-board or of stiffened fiber.

14, 14:, are end transverse strips and 15, 15, are interi'nediatetransverse strips of spring material, for instance spring steel, whichare secured respectively to the said flexible sheet, as by eyelets 1617.

18 is a covering of suitable material which is preferably received overthe resilient sheet 13 and bent inwardly under the longitudinal strips,the under-turned edges of said covering being secured to the inner facesof said longitudinal strips by tacks 19. The resilient sheet is securedto said longitudinal strips, as by tacks 20, the intermediate transversestrips being let into grooves 21 in said longitudinal strips under saidflexible sheet, forming a llcxible body or frame-work for thebolster-roll.

2t, 24; are ancht r-strips having connection with the resprctive .endtransverse strips 14. and are norinally arranged along the inner face ofsaid transverse strips as shown in ,l ig. t3. These ancluw-strips are ofspring- .material, as spring steel, and are brought into action when ,itis desired to monutthe roll in set-up form. These anchor-strips arearranged to be swung upon pi vot-pinsQti from the position shown in Fig.(3 to the position shown in Fig. 5, and then into the set-up relationshown in Fig. 4-, and are arranged for being received in end-slots 28 inthe ends of the rcs 'iective longitudinal strips, the construction beingsuch that the spring stress of said anchor-strips will be exerted uponthe end transverse strips in termediate of the ends thereof, as at thepivotpin connections, and at theends of said end transverse strips andintermediate of the ends of said anchor-strips, as at the walls of theend-slots 28, for bracing said end transverse strips and anchor-stripsupon each other and arranging the end transverse strips and theancluW-strips in a united boaved or circular form as shown in Fig. 4.

When the anchor-strip is brought into set-up relation, the face thereofwhich is ad 'jacent to theend transverse strip when in collapsedrelation, is ln'ought to a position facing away from said end transversestrip, by the swinging of said anchor-strip on its pivots, as clearlyshown by a comparison of Figs. (3, 5 and 4t.

The pivot-pins arc ln'cferably received through slots 2) in saidanchor-strips, the pins preferably being provided with elongated heads30 which are arranged to be received in said slots when theanchor-strips are in abnormal position, as shown in Fig. 5. The slotsare provided further to permit movement of the anchor-strip lengthwiseacross the shanks of the pins, and prevent binding between the parts,when the 't'rai'neworlc is being bent into set-up relation.

Tie-bands 2-31 32 are secured to the bolsterroll adjacent to the ends ofthe iuterinetliate transverse strips 15 and are arranged to be tied asshown at 33 for forcing the edges of said bolster-roll to properrelative distance when in set-up relation and giving the same its propertransverse curvature while mainvtaining proper longitudinal parallelismof the outer surface of the roll.

34: are aprons with which the ends of the roll-body are providedand 35are aprons with which the anchor-strips are provided, 36 being gatheringcords for gathering the adjacent inner edges of said aprons at therespective ends of said roll when the'roll is in set-up relation forforming the end rosettes 87. The provision of the'aprons 35 upon theanchor-strips is for the purposeof closing the gap at the ends of thebolsterroll which would otherwise be left in said ends by the provisionof the space 38 between the longitudinal strips when thebolster-roll isin set-up relation. In this manner a complete rosette for each end ofthebolster-roll is provided, made up of a plurality of the aprons having acommon gathe ering cord, the auxiliary aprons 35 belng positionedintermediate of the ends 01 the main aprons 34 when the bolster-roll isin set-up relation. The space 38 which forms .the gap between thelongitudinal edges of the roll when in set-up relation permits pilnationof'a, resilient body, spring anchorstrips pivoted at both their ends tosaid body, said spring anch0r+strips having one of their sidespresentedtowardsaid body .when in collapsed relation and arranged to;

be swung sidewardly in arcs about their pivots for forming both saidbody and spring anchor-strips in oppositely bowed form with the othersides of said. respective spring anchor-strips presented toward saidbodywhen in set-up relation, and bracing means opening in the directionoflength of said bolster-roll for fixing said body and springanchor-strips in oppositely bowed set-up relation, substantially asdescribed.

3. In a collapsible bolster-roll, the combination of a resilient body,spring anchorstrips pivoted at both their ends to said body, saidspringanchor-strips having one of their sides presented toward said body whenin collapsed relation and arranged to be swung sidewardly in arcs abouttheir pivots for forming both said body and spring anchor-strips inoppositely bowed form with the other sidesof said respective springanchor-strips presented toward said body when in set-up relation, andmain aprons secured to the ends of said body and auxiliary apronssecured to said spring anchor-strips, for forming end rosettes for saidroll when in set-up relation, substantially as described.

In testimony whereof, we have signed our names hereto in the presence oftwosubscribing witnesses.

HERMAN RUMIF. FREDRIGK RUMPF.

Witnesses: 1

W. P. HALL CHARLES HERoLn.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

